164 results about "Ammonium nitrate" patented technology

The invention relates to the technical field of guanidine nitrate preparation, in particular to a method for preparing guanidine nitrate by a continuous dynamic tubular reaction process, which comprises the following steps: uniformly mixing dicyandiamide, target ammonium nitrate and target ammonium carbonate according to a mass ratio of 1: (1-3): (1-0.5); conveying the uniformly mixed material to a feeding section in a dynamic tubular reactor through a first conveying screw rod for mixing treatment, wherein the dynamic tubular reactor further comprises a heating section, a reaction section and a cooling section; sequentially conveying the target mixed material to a heating section for heating melting treatment, a reaction section for synthesis reaction treatment and a cooling section for cooling forming treatment through a second conveying screw rod to obtain an initial product; conveying the initial product into a cooling and crushing device for cooling and slicing to obtain a target guanidine nitrate product. According to the method disclosed by the invention, the mass and heat transfer efficiency can be improved, the online quantity and liquid holdup of the material are reduced, meanwhile, the raw material ratio and the reaction path are optimized, and the safety and the product purity are improved.

A composite oil phase and composite emulsion matrix for site-mixed emulsion explosive and preparation methods therefor. The composite oil phase is divided into material A and material B, wherein in the material A, a high-viscosity polyisobutylene maleic anhydride amine esterification derivative is used as a primary emulsifier to increase the strength and thickness of an emulsification film of an emulsion matrix, thereby improving the stability of the emulsion matrix; in the material B, a low-viscosity polyisobutylene maleic anhydride amine esterification derivative and SP-80 are used as primary emulsifiers to regulate the ammonium nitrate dissolution rate of the emulsion matrix, thereby improving the sensitization characteristic of the emulsion matrix; and the emulsion matrix prepared from two composite oil phases can effectively improve the water resistance of the emulsion matrix while the problems of high-temperature over-sensitization and low-temperature insensitivity are solved, so that the explosion quality is guaranteed.

The invention discloses a nitrate-containing waste liquid treatment method, which comprises: (1) waste acid treatment: diluting waste acid in a neutralization reaction kettle, adding ammonia water while stirring, controlling the temperature to be 70-95 DEG C, continuously adding ammonia water to adjust the pH value of the solution to be 7.5-10.0 after the neutralization is completed, and carrying out stirring distillation to obtain an ammonium sulfate nitrate aqueous solution or an ammonium sulfate nitrate crystal; (2) wastewater treatment: 1) wastewater steam stripping: transferring nitrate wastewater into a steam stripping kettle, adding a pH regulator to regulate the pH value to be 10-13, heating the steam stripping kettle to a boiling state by using steam, distilling, condensing and recovering nitrate in the wastewater; and 2) oxidation treatment: after steam stripping is finished, hydrogen peroxide is added into the steam stripping kettle in a boiling state, stirring reaction is performed, and the reacted wastewater can be discharged after reaching the standard. Compared with a traditional Fenton method and an activated carbon adsorption method, the method has the advantages that secondary pollutants Fe (OH) 3 generated by treatment and saturated activated carbon after adsorption can be avoided, harsh reaction conditions such as light, electricity and microwaves can be avoided, the operation cost is reduced, the method is safe, environment-friendly and free of secondary pollution, the nitrate removal rate can reach 100%, and the method is suitable for industrial production. The COD (Chemical Oxygen Demand) of the treated wastewater is less than 100mg / L, and the wastewater can reach the direct discharge standard.

Disclosed is a system for the production of urea ammonium nitrate (UAN), which is particularly suitable for processing relatively small ammonium nitrate waste streams into UAN. The system comprises a concentration for ammonium nitrate, a treatment section which allows recovering and recirculating nitrogen compounds entrained in vapor from the concentration section, and a pH control section allowing to adjust the pH of the processed ammonium nitrate waste stream to the extent necessary.

The invention relates to the technical field of pharmaceutical analysis, in particular to a method for detecting the content of guanidine nitrate by precolumn derivatization-high performance liquid chromatography, which comprises the following steps: oscillating and uniformly mixing a guanidine nitrate reference substance or sample and pure water at room temperature, adding sulfuric acid concentrated liquor in cold water bath to perform derivatization reaction, after the reaction is finished, placing at room temperature, and performing column chromatography to obtain the guanidine nitrate content. Adding liquid caustic soda for neutralization, carrying out gradient constant volume by using a mobile phase, and filtering by using a microporous filter membrane to respectively obtain a derivatization reference solution and a derivatization sample solution; and respectively injecting the derivatization reference substance solution and the derivatization sample solution into HPLC, recording peak areas, and calculating the content of guanidine nitrate in the sample by adopting an external standard method. The guanidine nitrate sample is pretreated through the precolumn derivatization reaction, the guanidine nitrate derivative generated through the reaction has the advantages of being high in stability and easy to separate, ammonium nitrate and nitric acid impurities can be effectively prevented from interfering the detection result, the explosive picric acid is not adopted in the detection method, and the detection method is simple, safe and easy to implement.

The utility model discloses an ammonium nitrate solution concentration blending reation kettle with anti -explosion function belongs to reation kettle equipment technical field, the utility model discloses a reation kettle body is communicated with the discharge valve at reation kettle body bottom, can carry out even heating to solution through the electric heating plate in the reation kettle body inner wall bottom groove, avoid local temperature too high and cause ammonium nitrate to decompose gas and cause explosion, the cooperation design of stirring rod and top motor can carry out sufficient stirring to ammonium nitrate solution in reation kettle, make solution concentration distribution even. The annular ring and the explosion -proof pipe fixedly connected with the annular ring that reation kettle body surface sets up up and down, effectively enhanced the overall structural strength of reation kettle, the gas outlet pipe of top annular ring and the gas inlet pipe of bottom annular ring mutually cooperate, and the outside cold gas enters the space between the explosion -proof pipe and reation kettle body, and then even cooling is carried out to reation kettle body, and then gas is discharged to the outside from the gas outlet pipe, and the device has the advantages that the explosion -proof effect is good.

This invention relates to the field of solid propellant technology, specifically disclosing a neutral polymer bonding agent, its preparation method, and its application in solid propellants. The neutral polymer bonding agent is prepared by polymerization of poly(hydroxyalkyl polyacrylate) and cyanoacetic acid as raw materials. It can achieve controllable molecular weight and controllable proportion of functional groups in the polymer. Moreover, the active group -CN in the neutral polymer bonding agent has low steric hindrance and is more easily adsorbed on the surface of ammonium nitrate particles, thereby improving the bonding effect.

The invention discloses a composite propellant containing a high-nitrogen ferrocene derivative and a preparation method of the composite propellant. The composite propellant is prepared from the following components: 14.05% of hydroxyl-terminated polybutadiene (HTPB), 7.03% of diisooctyl sebacate (DOS), 0.92% of 2, 4-toluene diisocyanate (TDI), 1% of the high-nitrogen ferrocene derivative, 59% of ammonium perchlorate (AP) and 18.00% of aluminum powder (Al). N, N-dimethylaminomethylferrocene in the three high-nitrogen ferrocene derivatives has the effects of improving the burning rate of the composite propellant and reducing the pressure index as the ferrocene derivative, nitrate, picric acid, 3-nitro-1, 2, 4-triazole-5-ketone and the like are rich in C, H, O and N elements, and are similar to oxidizing agents such as typical components ammonium nitrate, HMD and the like in the composite propellant; the fuel can be decomposed to provide energy for propellant combustion; the propellant has a low combustion rate pressure index in a pressure range of 1-10 MPa, and has more excellent combustion stability.

The utility model relates to the technical field of on-site explosive loading, in particular to a blast hole filling length measuring device based on an on-site mixed loading ammonium nitrate fuel oil explosive truck, which is used for the mixed loading explosive truck and comprises a top spiral cylinder connected with the tail end of a top spiral of the mixed loading explosive truck. A pulley is connected to the mounting base through a pin shaft, an inner groove is formed in the periphery of the pulley, a rope slides in the inner groove, the two ends of the rope are connected with a balancing weight and a tension sensor respectively, a depth sensor is arranged in the balancing weight, and after the balancing weight is arranged at a preset position in a blast hole, explosive can be fed into the blast hole in real time; compared with the conventional mode of manually measuring the filling length of the blast hole after filling the explosive, the method provided by the utility model has the advantage that the measuring efficiency is obviously improved.

The application discloses a method and system for preparing ammonium bifluoride from hydrofluoric acid waste liquid, which comprises the following steps: (1) adding the hydrofluoric acid waste liquid into an electrolytic cell, transporting the electrolytic cell to a first reaction kettle after electrodepositing treatment, adding silicon dioxide, then stirring and reacting, and returning the generated silicon tetrafluoride and hydrofluoric acid into a spray tower to react and then return to the first reaction kettle, and then adding ammonia water to perform neutralization reaction; (2) filtering the solid-liquid mixture I, evaporating and drying the obtained filtrate I to obtain an ammonium nitrate product, and returning the obtained filter cake I to a second reaction kettle, adding ammonia water to adjust the pH value, and then stirring and reacting; (3) filtering the solid-liquid mixture II, returning the obtained filter cake II to the first reaction kettle for reuse, transporting the obtained filtrate II to a reactor, adding hydrofluoric acid to perform reaction, and then performing evaporation and drying treatment to obtain an ammonium bifluoride product. The method is simple in process, low in energy consumption, convenient to operate and convenient for industrialized production and application.

The present application relates to the technical field of combustible substance detection in ammonium nitrate, and provides an automatic device for detecting combustible substance in ammonium nitrate, which comprises a reagent storage unit for storing ammonium nitrate sample, sodium persulfate reagent and phosphoric acid reagent; a CO2 infrared analyzer is connected with the reagent storage unit, the CO2 infrared analyzer can receive the reagent supplied by the reagent storage unit and determine the content of CO2 after the combustible substance in the ammonium nitrate sample is oxidized by the sodium sulfate reagent to form CO2; a controller controls the reagent storage unit to supply the reagent to the CO2 infrared analyzer, and receives and analyzes the content information of CO2 determined by the CO2 infrared analyzer to obtain the content of combustible substance in ammonium nitrate. The automatic device for detecting combustible substance in ammonium nitrate provided by the present application realizes efficient detection of combustible substance by using wet oxidation-infrared quantitative technology.

The utility model discloses a granular ammonium nitrate feeding device for an on-site mixed loading explosive truck, which comprises a feed box, a support frame is fixedly arranged on the periphery of the feed box, a discharge port is arranged at the lowest point of the feed box, and a discharge mechanism is arranged outside the discharge port. The discharging mechanism comprises a discharging cover plate covering the discharging port and a plurality of sets of driving connecting rods and driven connecting rods, one end of each driven connecting rod is hinged to one end of the corresponding driving connecting rod in the same set, the other end of each driven connecting rod is hinged to the discharging cover plate, the other end of each driving connecting rod is vertically and fixedly connected with an operating rod, and the operating rod is fixedly connected with the discharging port. The two ends of the operating rod are rotationally connected with the supporting frame in a shaft hole positioning mode, and the operating rod is perpendicularly and fixedly connected with a plurality of operating handles. The device has the advantages of being simple in structure, free of maintenance, convenient to use, low in energy consumption, small in equipment investment and the like.

The utility model relates to the technical field of explosive filling, and discloses an ammonium nitrate fuel oil explosive truck explosive guiding pipe which comprises an outer pipe sleeve, an inner pipe fitting is fixedly sleeved with the outer pipe sleeve, a movable pipe is movably sleeved with the inner pipe fitting, a discharging pipe head is fixed to the end, extending out of the inner pipe fitting, of the movable pipe, and the discharging pipe head is fixedly connected with the outer pipe sleeve. A guide assembly is arranged between the movable pipe and the outer pipe sleeve, a limiting plate is fixed to one end of the outer pipe sleeve, a plurality of ventilation through holes are formed in the side wall of the limiting plate in a circular array mode, and the portion, located outside the ventilation through holes, of the side wall of the limiting plate is sleeved with a ring piece in a clamped mode. According to the utility model, the construction range of the existing ammonium nitrate fuel oil explosive truck is enlarged, the problem that operation cannot be carried out in some environments is solved, and the operation efficiency is improved.

This invention discloses a method for preparing g-C3N4-based composite energetic materials. The method employs simple physical grinding, in-situ reduction, and electrostatic self-assembly. First, g-C3N4 and explosive are physically ground at a specific mass ratio to obtain composite material 1. Then, ultrasonically treated g-C3N4 and GO are coated onto the surface of the explosive crystals through in-situ reduction to obtain composite material 2. Finally, the highly cationic properties of polyethyleneimine are used to modify the surface of ammonium nitrate explosives, and composite material 3 is obtained through electrostatic self-assembly. This invention combines g-C3N4 and GO to desensitize ammonium nitrate explosive crystals, resulting in an ammonium nitrate explosive composite material that simultaneously possesses desensitization and high energy performance. The high stability, high thermal conductivity, and lubricity of g-C3N4 and GO are utilized to passivate the mechanical sensitivity of the energetic material.

Provided are an ammonium nitrate manufacturing apparatus, which is an apparatus for manufacturing ammonium nitrate from a diluted nitrogen oxide, including: a cathode; an anode which is arranged to be opposite to and spaced apart from the cathode; and an electrolyte placed between the anode and cathode, wherein the cathode and the anode are independently of each other gas diffusion electrodes including: a porous substrate; metal organic frameworks (MOFs) dispersed in the porous substrate; and a metal catalyst placed on one surface of the porous substrate, and a method for manufacturing ammonium nitrate using the same.

The utility model discloses a safe, efficient and energy-saving ammonium nitrate solution production system which comprises an efficient tubular reactor, a reactor flash tank and a reflux mixer, the efficient tubular reactor is communicated with the reactor flash tank and the reflux mixer, and an ammonia gas pipe and a nitric acid pipe are connected to the efficient tubular reactor. An adjusting loop is connected among the ammonia gas pipe, the nitric acid pipe and the efficient tubular reactor, the reflux mixer comprises a neutralization washing tower, and the reactor flash tank is further connected with a falling film primary evaporator. Compared with the prior art, the system provided by the utility model has the advantage that the ammonium nitrate solution can be prepared safely, efficiently and in an energy-saving manner by utilizing the pressurized tubular reactor and the MVR evaporator.

The invention discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming, the method comprises the following steps: by taking a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a compound plate, sequentially laying a base plate, the Q235B steel plate, a support column, the tin-phosphor bronze plate, a protective layer, a fence structure, a low-detonation-velocity rock expanded ammonium nitrate fuel oil explosive layer and an inert layer on an explosion field from bottom to top, and forming the composite plate. And then the tin-phosphor bronze plate and the Q235B steel plate are subjected to metallurgical bonding after high-speed collision by detonating the explosive, the large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is larger than 98%, the interface shear strength exceeds 274 MPa, and the composite plate has the advantages of excellent high strength, wear resistance and the like of tin-phosphor bronze and low cost of Q235B steel.

This application provides a continuous titration method for the sulfuric acid and ammonium nitrate content of silicon etching solution. The continuous titration method includes the following steps: weigh m grams of silicon etching solution sample into a sample bottle, add phenolphthalein indicator, titrate with a first sodium hydroxide standard solution of concentration C1 until a pink color is achieved, and record the volume consumed V1. Calculate the sulfuric acid content. Add neutral formaldehyde solution to the same solution and let it stand for a first preset time to generate a free acid solution. Continue titrating the free acid solution with a second sodium hydroxide standard solution of concentration C2 until the solution turns pink. Gently heat the solution to a preset temperature and maintain this temperature for a second preset time. If the pink color persists, the titration endpoint is determined, and the volume consumed V2 is recorded. Calculate the ammonium nitrate content. This method achieves continuous titration of two components with a single sample, eliminates mutual interference between components, optimizes the endpoint determination method, and thus achieves a simple operation, high accuracy, low sample consumption, and high detection efficiency.

The invention discloses a liquid energetic material composed of non-dangerous chemical raw materials and a preparation method of the liquid energetic material, the liquid energetic material is formed by mixing an oxidizing agent concentrated solution and glycerin in proportion, and the oxidizing agent concentrated solution is obtained by mixing calcium ammonium nitrate, ammonium carbonate and water in proportion and then conducting filtration and vacuum concentration. According to the invention, the prior art is greatly improved, and the three raw materials are all non-dangerous chemicals, so that the traffic and storage safety in the long-time land and marine transportation process in the offshore oilfield operation can be greatly improved; the mode of obtaining the liquid energetic material on site is simple, and seamless butt joint operation with existing liquid gunpowder deflagration fracturing can be achieved; the influence of temperature on solubility is overcome, the composition proportion is moderate, the system can be completely dissolved after being prepared, the operation water adding amount is reduced by utilizing crystal water in the raw materials, and the preparation method is suitable for the environment in shortage of water resources.

The present application relates to the field of emulsion explosive production, and more particularly to a continuous production equipment and process device for emulsion ammonium oil explosive. The device comprises a fixing part for fixing and packaging the emulsion explosive, and further comprises a moving mechanism for moving the emulsion explosive and cooperating with subsequent mechanisms to cool and assemble the emulsion explosive, the moving mechanism comprising a conveying assembly and a transfer assembly; a first cooling mechanism arranged at the front end of the moving mechanism and used for first cooling the emulsion explosive, the first cooling mechanism comprising a melting assembly and a cleaning assembly; a filling mechanism arranged below the first cooling mechanism and used for filling the fixing part in cooperation with the first cooling mechanism; and a second cooling mechanism arranged behind the first cooling mechanism and used for second cooling the emulsion explosive while placing the emulsion explosive into the fixing part. Through the assembly of the fixing part, the storage life of the emulsion explosive is prolonged.

The invention discloses a charging device for emulsified granular ammonium nitrate fuel oil explosives. The device comprises a barrel, a stirring part, a cleaning disc and a bearing part, the stirring part comprises an auger and a power unit which are rotatably inserted into the barrel; one end of the cleaning disc is connected with the auger; the other end is vertically and slidably arranged on the cylinder wall; the bearing part is arranged in the cylinder, one end of the bearing part is detachably connected with the auger, and the other end of the bearing part is detachably connected with the corresponding end of the cleaning disc. According to the cleaning device, the packing auger rotates reversely to separate the bearing component from the cleaning disc, so that vertical constraint on the cleaning disc is relieved, then the packing auger rotates forwards to drive the cleaning disc to descend, the cleaning disc scrapes impurities attached to the inner wall of the barrel and the packing auger and discharges the impurities from the discharging port, and after cleaning is completed, the packing auger rotates reversely again to drive the cleaning disc to ascend, so that the cleaning disc is cleaned. The whole process reduces manual intervention, the mixing equipment in the cylinder body is not disassembled, the working intensity is reduced, and the cleaning efficiency is improved.

The invention discloses a detonating cord-free interval charging structure and a smooth blasting method. The detonating cord-free interval charging structure comprises at least two sections of main charges arranged at intervals and an explosion propagation medium arranged between the two adjacent sections of main charges; the front-end main charge detonates the explosion propagation medium, the explosion propagation medium detonates the rear-end main charge, and explosion propagation is achieved; wherein the explosion propagation medium comprises the following components in percentage by mass: 70-82% of ammonium nitrate; 3%-5% of diesel oil; 3%-5% of industrial wood powder; 3%-10% of expanded perlite; 0%-5% of talcum powder; 4%-8% of industrial salt; and 0%-1% of thiourea. The smooth blasting method comprises the following steps: according to the dynamic tensile strength and fracture toughness of rock, determining the final assembly length and charge quantity of main charge, the blast hole spacing, the spacing between the front-end main charge and a booster medium, the spacing between the booster medium and the rear-end main charge and the charge length of the booster medium; and charging and blasting. According to the invention, a special detonation propagation medium with low detonation velocity and high sensitivity is adopted to replace a traditional detonating cord.

The invention relates to a quantitative feeding machine for medicinal solid ammonium nitrate for ammonium oil frying. Comprising a conveying mechanism used for conveying an ammonium nitrate raw material, a packaging mechanism arranged on the outer side of the conveying mechanism and used for packaging ammonium nitrate in a vacuum mode through a material bag, a screening mechanism arranged on the conveying mechanism and used for screening out ammonium nitrate powder, and a crushing mechanism arranged on the conveying mechanism and used for crushing ammonium nitrate blocks into powder. The first feeding mechanism and the second feeding mechanism are arranged between the conveying mechanism and the packaging mechanism, and the first feeding mechanism is matched with the second feeding mechanism to be used for quantitatively feeding ammonium nitrate powder in the screening mechanism and the crushing mechanism into a material bag; the ammonium nitrate powder crushed by the crushing mechanism is wrapped outside the ammonium nitrate powder screened by the screening mechanism; the problems that existing feeding equipment is unreasonable in structure and low in quantitative feeding precision, and ammonium nitrate is prone to caking and uneven in distribution are solved.

The invention relates to the technical field of ammonium nitrate fuel oil explosives, in particular to a method for judging the anti-blocking capacity of a modified ammonium nitrate fuel oil explosive and application of the method. The evaluation method comprises the following steps: loading explosive powder to be detected into a container; vertically pressing a heavy object into the container and completely acting on the to-be-tested explosive powder, so that the to-be-tested explosive powder bears a fixed pressure intensity to form a compacted grain; placing the container filled with the compacted grain in a constant temperature box with a preset temperature for heat preservation; the compacted grain is taken out and placed on a measuring instrument to be subjected to a compression test till the grain is crushed; and recording the maximum force value required for crushing and compacting the grain, and taking the maximum force value as the basis for judging the anti-caking capability of the modified ammonium nitrate fuel oil explosive, so that the larger the maximum force value is, the weaker the anti-caking capability is. The invention also provides application of the method. The crushing force value data obtained by the evaluation method is used for screening anti-caking additives, evaluating the anti-caking performance of different modified ammonium nitrate fuel oil explosives and the like. The problem that the modified ammonium nitrate fuel oil explosive series product lacks a scientific and quantitative evaluation method is solved.

The invention relates to the technical field of alcohol detection, and discloses a volatile alcohol detection sensor as well as a preparation method and application thereof. The preparation method comprises the following steps: pressing a mixture of a biomass carbon source, ammonium nitrate and zinc nitrate into sheets, placing the sheets in an inert atmosphere, raising the temperature to 200-210 DEG C at a rate of 1-5 DEG C / min, keeping the temperature for 30-60 minutes, raising the temperature to 500-510 DEG C at a rate of 1-3 DEG C / min, keeping the temperature for 60-90 minutes, raising the temperature to 950-960 DEG C at a rate of 10-13 DEG C / min, and keeping the temperature for 120-150 minutes to obtain porous carbon sheets; the two electrode plates are attached to the porous carbon plate, the two electrode plates are connected with a voltage detection device through external wires, and the volatile alcohol detection sensor is obtained. By adopting the preparation method disclosed by the invention, the prepared sensor has relatively high mechanical stability and can realize relatively high detection sensitivity in detection of volatile alcohol substances.

The invention discloses a preparation method and a use method of a controllable conductive high-energy self-destruction fiber membrane, relates to the technical field of energetic materials and conductive self-destruction, and aims to solve the problem that electric energy cannot be directly applied to stimulate self-destruction in an existing method and expand self-destruction ways and application scenes. The preparation method of the self-destruction fiber membrane comprises the following steps: dissolving the azido polyether thermoplastic elastomer and the fluorine-containing polymer in a composite solvent, then adding the ammonium nitrate explosive and the nano metal powder, ultrasonically stirring uniformly, then preparing the self-destruction fiber membrane through electrostatic spinning, and finally, adhering a high-conductivity silver simple substance on the surface of the self-destruction fiber membrane by adopting a silver mirror reaction. The application method comprises the following steps: combining the obtained self-destruction fiber membrane with a commercial flexible circuit board base material to prepare a self-destruction device which is stably conductive under safe electric power, and otherwise, rapidly exploding and self-destructing. According to the method provided by the invention, the technical difficulty that a common self-destruction material can only be self-destructed through thermal excitation is solved, and controllable fire blast self-destruction under electric energy stimulation is realized by introducing a high-conductivity silver simple substance through a silver mirror reaction.

The present disclosure relates to a method of making a zeolite. The method includes mixing an aluminum nitrate with an aqueous solution of NaOH to form a first mixture followed by mixing silica gel with the first mixture to form a second mixture. The second mixture is heated with microwave irradiation to form a first sample. The method further includes washing, drying, and ion exchanging the first sample with ammonium nitrate to form a second sample. The method includes calcining the second sample to form the zeolite, wherein the method does not use a seed or a structural directing agent.

The invention provides a method for preparing an emulsion explosive by converting a waste hydroxyl-terminated polybutadiene propellant and the emulsion explosive. The method comprises the following steps: mixing ammonium nitrate, sodium nitrate, urea and water according to a formula ratio, and heating to obtain a water-phase solution; mixing the vaseline, the light diesel oil and the Span-80 according to the formula ratio, and heating to obtain an oil phase solution; adding the water-phase solution into the oil-phase solution, and performing high-temperature emulsification treatment to obtain an emulsion matrix; adding a chemical foaming agent aqueous solution into the cooled emulsion matrix, and carrying out sensitization reaction to obtain a mixed material; and adding the waste hydroxyl-terminated polybutadiene propellant powder into the mixed material according to the formula ratio, and uniformly mixing to obtain the product. In the emulsion explosive, the mass of the waste hydroxyl-terminated polybutadiene propellant powder is 5-35%, and the mass of the mixed material is 65-95%. The method provided by the invention solves the problems of green and safe treatment of the waste solid propellant in the prior art, and the density of the provided emulsion explosive is improved by 3-5% and the detonation velocity is improved by 2-4% under the condition that the sensitivity of the existing emulsion explosive is not changed.

The invention discloses an upward hole on-site mixed porous granular ammonium nitrate fuel oil explosive which is characterized by comprising the following raw materials in parts by mass: 92-96 parts of porous granular ammonium nitrate, 3-4 parts of an oil phase material, 0.5-2 parts of a hydroxyl-terminated telechelic polymer, 0.45-1.8 parts of a chain extender and 0.05-0.2 part of a curing agent. Wherein the hydroxyl-terminated telechelic polymer can react with the curing agent to form a cross-linked high polymer material, so that the adhesive property of the explosive and the anti-falling property of the explosive when the explosive is used in an upward hole are enhanced; the chain extender further optimizes the viscoelasticity of the explosive by extending a polymer chain segment and adjusting the crosslinking density, so that the anti-falling performance of the explosive is more excellent; the oil phase material can be tightly combined with the porous granular ammonium nitrate, so that the explosion performance of the explosive is improved. The on-site mixed and loaded porous granular ammonium nitrate fuel oil explosive provided by the invention has excellent anti-falling performance during upward hole loading, also has an excellent detonation effect, and has a relatively high popularization value.

The application discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming. The method uses a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a composite plate, lays, from bottom to top, a backing plate, the Q235B steel plate, a supporting column, the tin-phosphor bronze plate, a protective layer, an enclosure structure, a low-explosive-speed rock expanded ammonium nitrate oil explosive layer and an inert layer on an explosion field, and then causes the tin-phosphor bronze plate and the Q235B steel plate to collide at a high speed by detonating the explosive, so that metallurgical combination is caused, a large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is greater than 98%, the interface shear strength is greater than 274 MPa, and the composite plate has the excellent high strength, wear resistance and other performances of the tin-phosphor bronze and the low-cost advantage of the Q235B steel.